BACKGROUND Lipid oxidation is a main problem during food processing, storage and consumption leading to losses of quality, stability, safety and nutritive value. Antioxidants have been used to prevent oxidation changes and off - flavor development in food products. Aim of the research was to evaluate antioxidative effect of thyme ethanol extract on sunflower oil during its storage in different ...

We previously reported that the microsomal fraction from rat mammary tissue is able to oxidize ethanol to acetaldehyde, a mutagenic-carcinogenic metabolite, depending on the presence of NADPH and oxygen but not inhibited by carbon monoxide or other cytochrome P450 inhibitors. The process was strongly inhibited by diphenyleneiodonium, a known inhibitor of NADPH oxidase, and by nordihydroguaiaret...

HUMAN LIVER ALCOHOL DEHYDROGENASE (ALCOHOL: NAD(+) oxidoreductase, EC 1.1.1.1), homogeneous by physicochemical criteria, has been available in quantity only recently [Lange, L. G. & Vallee, B. L. (1976) Biochemistry 15, 4681-4686]. Until now, the biochemical basis of human alcohol metabolism had to be extrapolated from the properties and behavior of enzymes from other species, primarily horses ...

Using vo1tammetric technique with a rotating disk electrode, the anodic oxidation of carbazole in aqueous H2S04 ethanol mixtures was shown to proceed under diffusion and electron transfer control conditions. Electro-oxidation involves one electron transfer; electrode passivation occurs due to the formation of a poorly soluble product. By means of the SCF MO LCAO INDO, AMI-UHF and PM3-UHF method...

Background The main system of central ethanol oxidation is mediated by the enzyme catalase. By reacting with H2O2, brain catalase forms compound I (the catalase-H2O2 system), which is able to oxidize ethanol to acetaldehyde (ACD) in the brain. We have previously shown that ACD regu-lates ethanol motivational properties and possesses reinforcing effects by itself. In the present study, we invest...

The ability of sulfate-reducing bacteria to produce hydrogen sulfide and the high affinity of sulfide to react with divalent metallic cations represent an excellent option to remove heavy metals from wastewater. Different parameters have been proposed to control the hydrogen sulfide production by anaerobic bacteria, such as the organic and sulfate loading rates and the feed COD/SO4(2-) ratio. T...

In the present study we have shown that mitochondria isolated from Schizosaccharomyces pombe exhibit antimycin A-sensitive oxygen uptake activity that is exclusively dependent on ethanol and is inhibited by trifluoroethanol, a potent inhibitor of ADH (alcohol dehydrogenase). Ethanol-dependent respiratory activity has, to our knowledge, not been reported in S. pombe mitochondria to date, which i...

A minority of methanotrophs are able to utilize multicarbon compounds as growth substrates in addition to methane. The pathways utilized by these microorganisms for assimilation of multicarbon compounds, however, have not been explicitly examined. Here, we report the draft genome of the facultative methanotroph Methylocystis sp. strain SB2 and perform a detailed transcriptomic analysis of cultu...

Ethanol fuel cells require selective catalysts for complete oxidation of the fuel, which involves C–C bond cleavage. From experiments on well-defined surfaces and calculations, mechanism controlling ethanol electro-oxidation selectivity platinum in aqueous media as a model system is elucidated. Adsorbed OH favors adsorption conversion into adsorbed ethoxy, favorably evolves to COCH3. On Pt(111)...

In this work, the metal content of Pd85Ni10Bi5/C catalysts for alkaline ethanol-oxidation reaction was reduced from 40 wt.% (PdNiBi/C (40/60)) to 30 (30/70)), 20 (20/80)) and 10 (10/90)), while increasing performance. The synthesized were examined using physicochemical measurements electrochemical measurements. best performing used fabricate membrane electrode assemblies carrying out single-cel...